Superphylum Deuterostomia Grobben, 1908 - deuterostomes see Infrakingdom Deuterostomia Grobben, 1908
   Phylum Chordata Bateson, 1885 - chordates
     Subphylum Craniata auct.
       Infraphylum Vertebrata Lamarck, 1801 - vertebrates
         Superclass †Thelodontomorphi Jaekel, 1911 [monotypic]
           Class †Thelodonti Jaekel, 1911
             1 Order †Archipelepidiformes
             2 Order †Furcacaudiformes Wilson & Caldwell, 1998 - fork-tailed thelodonts
             3 Order †Thelodontiformes Kiaer, 1932